<template>
  <el-menu
    default-active="首页"
    class="el-menu-vertical-demo"
    @open="handleOpen"
    @close="handleClose"
    :collapse="isCollapse"
  >
    <el-menu-item @click="clickMenu(item)" v-for="item in onChildren" :key="item.name" :index="item.label">
      <i :class="`el-icon-${item.icon}`"></i>
      <span slot="title">{{item.label}}</span>
    </el-menu-item>

    <el-submenu  v-for="item in hasChildren" :key="item.label" :index="item.label">
      <template slot="title">
        <i :class="`el-icon-${item.icon}`"></i>
        <span slot="title">{{item.label}}</span>
      </template>

      <el-menu-item-group v-for="subItem in item.children" :key="subItem.name">
        <el-menu-item @click="clickMenu(subItem)" :index="subItem.name">{{subItem.label}}</el-menu-item>
      </el-menu-item-group>
    </el-submenu>


  </el-menu>
</template>
<style>
.el-menu-vertical-demo:not(.el-menu--collapse) {
  width: 200px;
  min-height: 400px;
}
.el-menu{
  height: 100vh;
}

</style>

<script>
export default {
  data() {
    return {
      // isCollapse: false,
      menuData: [
        {
          path: "/",
          name: "home",
          label: "首页",
          icon: "s-home",
          url: "Home/Home",
        },
        {
          path: "/mall",
          name: "mall",
          label: "商品管理",
          icon: "video-play",
          url: "MallManage/MallManage",
        },
        {
          path: "/user",
          name: "user",
          label: "用户管理",
          icon: "user",
          url: "UserManage/UserManage",
        },
        {
          label: "其他",
          icon: "location",
          children: [
            {
              path: "/page1",
              name: "page1",
              label: "页面1",
              icon: "setting",
              url: "Other/PageOne",
            },
            {
              path: "/page2",
              name: "page2",
              label: "页面2",
              icon: "setting",
              url: "Other/PageTwo",
            },
          ],
        },
      ],
    };
  },
  methods: {
    handleOpen(key, keyPath) {
      console.log(key, keyPath);
    },
    handleClose(key, keyPath) {
      console.log(key, keyPath);
    },
    // 点击菜单跳转对应组件
    clickMenu(item){
      console.log(item.path);
      if(this.$route.path !== item.path && !(this.$route.path === '/home' && (item.path == '/')) ){
         this.$router.push(item.path)
      }
      this.$store.commit('selectMenu',item)
    } 

  },
  computed:{
    // 没有子菜单
    onChildren(){
      return this.menuData.filter(item=> !item.children)
      // console.log(this.menuData.filter(item=> !item.children));
    },
    // 有子菜单的
    hasChildren(){
      return this.menuData.filter(item => item.children )
    },


    isCollapse(){
      return this.$store.state.tab.isCollapse
    }
  }


};
</script>